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Finding the Fourth Proportional to 356.09, 533.25 and 225.70

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Solution

The fourth proportional to 356.09, 533.25 and 225.70 is: 337.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.09 : 533.25 = 225.70 : x
  2. Step 2: Convert to fraction form
    356.09/533.25 = 225.70/x
  3. Step 3: Cross multiply
    356.09x = 533.25 × 225.70
  4. Step 4: Simplify right side
    356.09x = 120,353.19
  5. Step 5: Solve for x
    x = 120,353.19/356.09
  6. Step 6: Final answer
    x = 337.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.